Patents Represented by Attorney, Agent or Law Firm Skjerven Morrill MacPherson LLP
  • Patent number: 6397861
    Abstract: A processing chamber with a showerhead and a chuck is cleaned using an injection of a gaseous cleaning agent through an aperture in the chuck into the processing chamber. Because the aperture is located directly under the showerhead, a portion of the gaseous cleaning agent passes through the face plate of the showerhead so that the inside of the showerhead may be cleaned as well. By applying a radio frequency power supply between the chuck and the showerhead, for example, by a coil located between the chuck and showerhead or applying the power directly to the chuck and the showerhead, the gaseous cleaning agent forms a plasma. Thus, the portion of the gaseous cleaning agent that passes through the face plate and into the showerhead is a plasma. The plasma is pumped out of the chamber through a pumping port so that the plasma continuously flows through the processing chamber.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: June 4, 2002
    Assignee: Novellus Systems, Inc.
    Inventors: James C. Wing, Edward J. McInerney
  • Patent number: 6399452
    Abstract: A low thermal budget transistor is fabricated by first forming a gate on a semiconductor substrate. First amorphous regions and first inactive dopant regions are then created in the substrate by ion implantation. Sidewall spacers, which align subsequent implantation steps, are formed adjacent to the gate. Thereafter, second amorphous regions and second inactive dopant regions are created in the substrate by ion implantation. Dopants in the first and second inactive dopant regions are then activated using a low temperature annealing process to create source/drain regions and source/drain extension regions. The aforementioned process simplifies the fabrication of a low thermal budget transistor by dispensing with the requirement to remove the sidewall spacers.
    Type: Grant
    Filed: July 8, 2000
    Date of Patent: June 4, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srinath Krishnan, Witold Maszara
  • Patent number: 6400451
    Abstract: A non-contact type wheel alignment measuring apparatus includes a fixed-focal-length lens and a pair of light sources located on the opposite sides of the lens for projecting a pair of laser beams onto the side surface of a wheel to be measured. The apparatus also includes a CCD sensor on which images reflecting from the wheel are formed and the distance between the two images is detected as a function of pixels of CCD sensor between them. The information of this distance (or the number of pixels) is utilized to determine the distance between the measuring apparatus and a point of interest on the wheel. With two or more such information for different locations on the wheel, its alignment characteristic, such as toe-in and camber angles, can be determined.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: June 4, 2002
    Assignee: Anzen Motor Car Co., Ltd.
    Inventors: Yutaka Fukuda, Kenji Funakoshi
  • Patent number: 6398823
    Abstract: The present invention comprises a dynamic brake that applies restraining frictional force to a wafer in a wafer holder while the wafer holder is substantially at rest, but releases the restraining force as the processing carousel containing several wafer holders rotates about a central axis of the carousel. This dynamic brake preferably comprises a boot that passes through an opening in the wafer holder to rest on the surface of the wafer in an exclusion zone near the wafer's edge. The exclusion zone is typically no more than about 3mm in extent. The frictional force between the boot and wafer is sufficient to prevent unwanted motion of the wafer in the holder. As the wafer holder rotates about a central axis of the processing carousel, centrifugal forces applied to the brake arising from such rotation cause the boot to pivot upward, releasing the frictional force on the wafer.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: June 4, 2002
    Assignee: Tru-Si Technologies, Inc.
    Inventors: Oleg Siniaguine, Alex Berger
  • Patent number: 6401125
    Abstract: A distributed network communication system implements a series of token exchange transactions similar to those used when passing browser cookies between an Internet server and a browser client. Rather than instigating a cookie exchange transaction from the Internet server to store information relevant to the server, according to this aspect of the present invention the proxy cookie is stored on the client side at the behest of the web proxy. To the browser client, the proxy cookie appears to be identical to any regular browser cookie; however, whenever the browser client presents a request for information to the proxy which is to be passed on to the Internet server, the proxy strips the proxy cookie from the request and uses it to identify the originator of the request. Based on this, the proxy can customize and personalize the client's information request as appropriate and pass it on to the Internet server.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: June 4, 2002
    Assignee: Nextpage, Inc.
    Inventors: Selene K. Makarios, Robert C. Fitzwilson
  • Patent number: 6400732
    Abstract: A method and apparatus for determining synchronization and loss of synchronization in a high speed multiplexed data system. The system also includes a plurality of justification control bits and a backwards compatibility flag that allows the system to operate with older systems that have fewer justification control bits.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: June 4, 2002
    Assignee: DMC Stratex Networks, Inc.
    Inventors: Peter J. Castagna, David Randall
  • Patent number: 6400734
    Abstract: A system includes a unique word correlator module which correlates a unique word field in a burst of a time division multiple access (TDMA) signal against a predefined marker sequence. Automatic timing control circuitry is coupled to the unique word correlator module. The automatic timing control circuitry derives a number of errors that are allowable during correlation of the unique word field.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: June 4, 2002
    Assignee: National Semiconductor Corporation
    Inventor: David L. Weigand
  • Patent number: 6396294
    Abstract: A socket pin and a socket for electrical testing of a semiconductor package suppress electrical open/short defects due to contact failure and reduce manufacturing costs. The socket pin includes: an upper portion that connects to a lead of the semiconductor package, for exchanging a signal between the semiconductor package and a tester; a body connected to the upper portion, for buffering at two points, a downward force applied by the lead of the semiconductor package to the upper portion; a lower portion connected to the body of the socket pin, the lower portion being elastically durable to the force from the upper portion and the body; and a lower socket pin connected to the lower portion, which acts as a path for transmitting or receiving an electrical signal.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: May 28, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-soo An, Young-moon Lee, Jae-il Lee, Hyo-geun Chae
  • Patent number: 6394626
    Abstract: The invention is an outdoor lighting display using light emitting devices. A flexible light track is secured at the bottom of a channel, e.g. a letter or symbol. A top corresponding to the shape of the channel covers the channel to protect the flexible light track from weather changes. The flexible light track includes a plurality of plastic modules having electrical connectors and respective tracks. Light emitting devices (LEDs) are inserted in the plastic modules. Electrical wires are positioned in the tracks of the plastic modules such that the LEDs are electrically connected in parallel.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: May 28, 2002
    Assignee: LumiLeds Lighting, U.S., LLC
    Inventor: Larry McColloch
  • Patent number: 6396687
    Abstract: An apparatus and method are presented for making the cable connectors of a docking port more easily accessible for coupling and decoupling peripheral devices to the docking port. An advantage of the present invention is that it provides for easier accessibility with a minimum of moving parts and mechanisms by providing for the rotation of part of the docking port to make the port's connectors more easily accessible to a computer user.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: May 28, 2002
    Assignee: Dell Products, L.P.
    Inventors: Cecilia H. Sun, Reynold L. Liao, Sean P. O'Neal
  • Patent number: 6395150
    Abstract: A process for filling high aspect ratio gaps on substrates uses conventional high density plasma deposition processes, with an efficient sputtering inert gas, such as Ar, replaced or reduced with an He inefficient sputtering inert gas such as He. By reducing the sputtering component, sidewall deposition from the sputtered material is reduced. Consequently, gaps with aspect ratios of 6.0:1 and higher can be filled without the formation of voids and without damaging circuit elements.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: May 28, 2002
    Assignee: Novellus Systems, Inc.
    Inventors: Patrick A. Van Cleemput, George D. Papasouliotis, Mark A. Logan, Bart van Schravendijk, William J. King
  • Patent number: 6394568
    Abstract: A printer and components of the printer are described, along with methods of adjusting and using the printer. The printer includes a carriage that supports at least one printhead. The at least one printhead ejects ink onto a print media that is fed though a space between the printhead and a platen as the carriage moves laterally along slider rods supported by a beam. The space between the at least one printhead and platen is adjusted along the length of the printing path by applying a bending force to the underside of the beam that raises or lowers the beam relative to the platen at selected points. The adjustment is effected by one or more adjustment assemblies that abut the lower surface of the beam. In one embodiment, the first adjustment is an acorn nut and the second adjustment a differential screw that is engaged with the acorn nut.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: May 28, 2002
    Assignee: Hewlett-Packard Company
    Inventor: Jorge Menéndez
  • Patent number: 6392902
    Abstract: A soft-switched full-bridge pulse-width modulated (“FB PWM”) converter includes a coupled inductor provides ZVS conditions over a wide range of input voltages and output loads. Further, the FB PWM converter of the present invention requires neither a large leakage inductance in the transformer, nor an external inductor, to achieve ZVS.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 21, 2002
    Assignee: Delta Electronics, Inc.
    Inventors: Yungtaek Jang, Milan M. Jovanovic
  • Patent number: 6392286
    Abstract: The present invention uses an ultraviolet ray to clean PCBs in packaging semiconductors, instead of using a plasma gas. Since the ultraviolet ray cleaning does not require a vacuum condition around an ultraviolet ray lamp, a guide belt for conveying the PCBs can be freely installed in such a manner that an ultraviolet ray cleaning tool and fabricating equipment are arranged in-line. This results in an in-line arrangement of an ultraviolet ray cleaning chamber and the fabricating equipment. Therefore, the PCBs can be introduced into fabricating processes immediately after cleaning and a long standby time problem of the PCB outside of the fabricating equipment is solved.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: May 21, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-Tae Jin, Heui-Seong Kim, Sang-Young Kim
  • Patent number: 6393504
    Abstract: A memory device which utilizes a plurality of memory modules coupled in parallel to a master I/O module through a bus. Each memory module has independent address and command decoders to enable independent operation. Thus each memory module is activated by commands on the bus only when a memory access operation is performed within the particular memory module. Each memory module has a programmable identification register which stores a communication address of the module. The communication address for each module can be changed during operation of the memory device by a command from the bus. The memory device includes redundant memory modules to replace defective memory modules. Replacement can be carried out through commands on the bus.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 21, 2002
    Assignee: Monolithic System Technology, Inc.
    Inventors: Wingyu Leung, Winston Lee, Fu-Chieh Hsu
  • Patent number: 6393454
    Abstract: A Booth multiplier for multiplying a first number with a second number to produce a product has an array of adder cells arranged in a plurality of rows of adder cells and is provided with input circuitry that reduces the power consumption of the multiplier. This input circuitry includes a plurality of Booth recoding logic cells that provide the control signals to multiplexers in the adder cells in the array. The Booth recoding logic cells receive different subsets of bits of the second number and generate the Booth recoded control signals as a function of the received subset of bits. Each Booth recoding logic cell includes balanced logic circuitry for generating all of the Booth recoded control signals from that Booth recoding logic cell at the same time. The balanced logic circuitry minimizes temporary short-circuit paths in the multiplexers in the adder cells. The input circuitry also includes a split bus that provides the first number to the array.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: May 21, 2002
    Assignee: Cirrus Logic, Inc.
    Inventor: Tam-Anh Chu
  • Patent number: 6392484
    Abstract: A single stage amplifier system that produces an accurate linear output signal during low power demands and a pulse modulated output signal during high power demands is disclosed. A control circuit provides a linear signal and a pulsed signal to an output stage in response to a select signal provided by an external circuit. The single output stage includes two transistors in a push-pull arrangement that can be driven in their saturation regions when a pulsed signal is provided by the control circuit or driven within their linear region when a linear signal is provided. The single stage amplifier system can be used in either a half bridge amplifier system or an H-bridge amplifier system.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: May 21, 2002
    Assignee: Nikon Corporation
    Inventor: Mark K. Takita
  • Patent number: 6393139
    Abstract: A security access method and/or apparatus is disclosed in the present invention. The present invention discloses a security method that verifies both the user's fingerprints and the fingerprint entering sequence to determine whether an access can be authorized. By using both the fingerprints and the entering sequence as the access criteria, a highly secured device can be created using low cost commercial available components.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: May 21, 2002
    Assignee: Xirlink, Inc.
    Inventors: Min-Hsiung Lin, Shu Gao, Kung-Shiuh Huang, Jian-Ming Wang
  • Patent number: 6393506
    Abstract: A processor system includes an on-chip, split-transaction bus with independent address/control and data buses. Arbitration and bus acquisition protocols are performed on the address/control bus. An arbiter arbitrates I/O requests and regulates concurrent ownership of the split-transaction bus by assigning a virtual channel to each bus request. Data bus access is granted to a virtual channel on a priority basis, s so as to utilize to a maximum extent the available bandwidth of the data bus. In one embodiment, the data bus is preempted by another virtual channel when current virtual channel using the data bus becomes idle due to, for example, latencies in the data stream. Rearbitration, however, is avoided when the interrupted data transfer resumes, owing to state information regarding the data transfer stored in the master and slave modules of each virtual channel.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: May 21, 2002
    Assignee: National Semiconductor Corporation
    Inventor: John D. Kenny
  • Patent number: 6392762
    Abstract: A device for quick and precise determination of a scan start point for an image scanner is disclosed. The image scanner includes a photo-processing device and a scanning platform for placing thereon a document to be scanned. The scanning platform is printed with a background region and a color block which are of different colors and located in front of the scan start point of the photo-processing device, and the color block is enclosed with the background region, and has a specified point therein being a predetermined shift to the scan start point along a specific direction. The photo-processing device moves a predetermined distance L0 from the home position to a pre-scan position overlapping with the color block, then moves a calculated distance L1 from the pre-scan position to the specified point, and moves another predetermined distance L2 from the specified point to the scan start point along the specific direction to start scanning.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: May 21, 2002
    Assignee: Mustek Systems Inc.
    Inventors: Jenn-Tsair Tsai, Bill Chen